留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

气动量仪测头流场对发动机连杆测量稳定性的影响分析

魏先杰 龙威 邓伟 王继尧 吴蜜蜜

魏先杰, 龙威, 邓伟, 王继尧, 吴蜜蜜. 气动量仪测头流场对发动机连杆测量稳定性的影响分析[J]. 机械科学与技术, 2021, 40(3): 428-434. doi: 10.13433/j.cnki.1003-8728.20200064
引用本文: 魏先杰, 龙威, 邓伟, 王继尧, 吴蜜蜜. 气动量仪测头流场对发动机连杆测量稳定性的影响分析[J]. 机械科学与技术, 2021, 40(3): 428-434. doi: 10.13433/j.cnki.1003-8728.20200064
WEI Xianjie, LONG Wei, DENG Wei, WANG Jiyao, WU Mimi. Analyzing Influence of Flow Field of Pneumatic Measuring Instrument on Measurement Stability of Engine Connecting Rod[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(3): 428-434. doi: 10.13433/j.cnki.1003-8728.20200064
Citation: WEI Xianjie, LONG Wei, DENG Wei, WANG Jiyao, WU Mimi. Analyzing Influence of Flow Field of Pneumatic Measuring Instrument on Measurement Stability of Engine Connecting Rod[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(3): 428-434. doi: 10.13433/j.cnki.1003-8728.20200064

气动量仪测头流场对发动机连杆测量稳定性的影响分析

doi: 10.13433/j.cnki.1003-8728.20200064
基金项目: 

国家自然科学基金重点项目 51766006

云南省教育厅科学研究基金项目 2021Y113

学生课外学术科技创新基金项目 2020YB048

清华大学摩檫学国家重点实验室开放基金项目 SKLTKF16B02

详细信息
    作者简介:

    魏先杰(1992-), 硕士研究生, 研究方向为流体传动与控制, 815915603@qq.com

    通讯作者:

    龙威, 教授, 硕士生导师, daifor@163.com

  • 中图分类号: O353.1

Analyzing Influence of Flow Field of Pneumatic Measuring Instrument on Measurement Stability of Engine Connecting Rod

  • 摘要: 现有气动量仪在使用过程中出现测量数值不稳定、工件测量磨损等现象。本文分析了气动量仪测量工作原理,对发动机连杆大头孔与大头测头之间的内部流场进行了数值计算和实验测量,发现现有连杆测头的导向面没有形成有效支撑气膜,且在排气槽中气流紊乱,导致测量过程稳定性差,喷嘴端面附近的排气槽边缘会产生局部高压区,导致气阻增大,从而影响测量精度,从而明确了气动量仪测量过程中气膜流场均匀性对测量稳定性的决定性作用。提出了测量稳定性和可靠性更好地双E型排气槽结构测头,通过分析双E型测头内部流动特征,采用双E型排气槽结构测头的压力和流场分布更均匀,气流波动收敛至稳定值,测量波动幅值是现有测头的1/5,有效提高了的测量精度和测量稳定性。
  • 图  1  排气槽内流场示意图

    1.辅助槽   2.喷嘴端面 3.喷嘴  4.排气槽  5.通槽

    图  2  网格数对数值分析结果影响

    图  3  不同气膜厚度下的测量头承载力和气膜刚度

    图  4  不同排气槽宽度的气阻系数曲线图

    图  5  排气槽深度对气阻系数的影响

    图  6  浮标式气动量仪测试平台

    图  7  气动量仪测量头的结构与压力云图

    图  8  测头的压力曲线图

    图  9  检测气膜排气槽内流场特征

    图  10  连杆孔径分布图

    图  11  连杆孔径圆度分布图

    表  1  气动量仪测头结构参数表

    参数 数值
    喷嘴端面直径D1/mm 4.0
    喷嘴下沉量/μm 0~20
    排气槽宽度L1/mm 0.4~10
    竖直排气通槽L2/mm 1.2~10
    排气槽深度h/mm 0.3 ~0.75
    喷嘴直径d/mm 1.5
    下载: 导出CSV

    表  2  气动量仪测头结构优化参数选取表

    优化参数 尺寸
    喷嘴端面直径D1/mm 4.0
    喷嘴下沉量/μm 10
    排气槽宽度L1/mm 6.0
    竖直排气通槽L2/mm 6.0
    排气槽深度h/mm 0.5
    喷嘴直径d/mm 1.5
    下载: 导出CSV
  • [1] 吴兆汉, 汪长民, 林桐藩, 等. 内燃机设计[M]. 北京: 北京理工大学出版社, 1990

    WU Z H, WANG C M, LIN T F, et al. Internal combustion engine design[M]. Beijing: Beijing Institute of Technology Press, 1990 (in Chinese)
    [2] 郑黎明. 发动机连杆裂解加工关键技术研究与装备开发[D]. 长春: 吉林大学, 2012

    ZHENG L M. Research on key technologies and equipment development of engine connecting rod fracture splitting[D]. Changchun: Jilin University, 2012 (in Chinese)
    [3] JABLONSKI R. Measurement of extremely long microbores by application of laser metrology[J]. Measurement, 2000, 28(3): 139-145 doi: 10.1016/S0263-2241(00)00007-5
    [4] VACHARANUKUL K, MEKID S. In-process dimensional inspection sensors[J]. Measurement, 2005, 38(3): 204-218 doi: 10.1016/j.measurement.2005.07.009
    [5] 叶宗茂, 刘沉前. 孔径气动测头在动力总成机加件生产中的应用[J]. 金属加工(冷加工), 2018(10): 3-7 https://www.cnki.com.cn/Article/CJFDTOTAL-JXGR201810002.htm

    YE Z M, LIU C Q. Application of aperture pneumatic probe in the production of powertrain assembly[J]. Metal Working (Metal Cutting), 2018(10): 3-7 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JXGR201810002.htm
    [6] 刘玉初. 气动量仪[M]. 北京: 机械工业出版社, 1991

    LIU Y C. Pneumatic measuring instrument[M]. Beijing: China Machine Press, 1991 (in Chinese)
    [7] JERMAK C J, RUCKI M. Air gauging: still some room for development[J]. AASCIT Communication, 2015, 2(2): 29-34
    [8] WANG Y H, HU S Q, HU Y. An automatic sorting system based on pneumatic measurement[J]. Key Engineering Materials, 2005, 295-296: 563-568 (in Chinese) doi: 10.4028/www.scientific.net/KEM.295-296.563
    [9] RUCKI M, BARISIC B, SZALAY T. Analysis of air gage inaccuracy caused by flow instability[J]. Measurement, 2007, 41(6): 655-661
    [10] LIU J, WANG G L, PAN X D. Minimum-zone form tolerance evaluation for cylindrical surfaces using adaptive ant colony optimization[J]. Journal of Computational Information Systems, 2011, 7(12): 4480-4490
    [11] LIU J, PAN X D, WANG G L, et al. Design and accuracy analysis of pneumatic gauging for form error of spool valve inner hole[J]. Flow Measurement and Instrumentation, 2012, 23(1): 26-32 doi: 10.1016/j.flowmeasinst.2011.12.007
    [12] 王世龙, 王丽娜. 数显式差压气动误差测量仪[J]. 仪表技术与传感器, 2013(10): 44-46 https://www.cnki.com.cn/Article/CJFDTOTAL-YBJS201310015.htm

    WANG S L, WANG L N. Differential type instrument by digital display to measure errors based on pneumatic principle[J]. Instrument Technique and Sensor, 2013(10): 44-46 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YBJS201310015.htm
    [13] 苏智剑, 高振奎, 张克选, 等. 气动量仪自动校对原理与仿真实验[J]. 工具技术, 2014, 48(1): 78-81 https://www.cnki.com.cn/Article/CJFDTOTAL-GJJS201401060.htm

    SU Z J, GAO Z K, ZHANG K X, et al. Automatic proofreading principle and simulation for pneumatic measuring instrument[J]. Tool Engineering, 2014, 48(1): 78-81 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GJJS201401060.htm
    [14] 吴新峰. 浮标式气动测量仪放大倍数快速调整的理论探讨及应用[J]. 计量与测试技术, 2016, 43(10): 82-83 https://www.cnki.com.cn/Article/CJFDTOTAL-JLYS201610040.htm

    WU X F. Discussion on the principle and application of a rapid adjusting method for the mangification of float type pneumatic measuring instrument[J]. Metrology & Measurement Technique, 2016, 43(10): 82-83 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JLYS201610040.htm
    [15] 陈继承, 陈再良. 精密轴孔联合气动测量的研究[J]. 机械工程师, 2017(1): 4-7 https://www.cnki.com.cn/Article/CJFDTOTAL-JXGU201701002.htm

    CHEN J C, CHEN Z L. Research on measuring high precise shaft and bore together based on pneumatic measurement[J]. Mechanical Engineer, 2017(1): 4-7 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JXGU201701002.htm
    [16] 李鹏, 张超, 白俊礼. 新型片齿轮单键键宽气动量仪的设计应用[J]. 汽车实用技术, 2018(18): 243-245 https://www.cnki.com.cn/Article/CJFDTOTAL-SXQC201818084.htm

    LI P, ZHANG C, BAI J L. Design and application of a new type of single key width pneumatic measuring device for film and gear[J]. Automobile Applied Technology, 2018(18): 243-245 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SXQC201818084.htm
    [17] JERMAK C J, BARISIC B, RUCKI M. Correction of the metrological properties of the pneumatic length measuring gauges through changes of the measuring nozzle head surface shape[J]. Measurement, 2010, 43(9): 1217-1227 doi: 10.1016/j.measurement.2010.06.001
    [18] JERMAK C J, PIąTKOWSKI R, DEREZ·YN'SKI J, et al. Comparison of the models of the air gauge static characteristics[J]. Archive of Mechanical Engineering, 2017, 64(1): 93-110 doi: 10.1515/meceng-2017-0006
    [19] 袁梅, 伍权, 徐卫平. 基于ANSYS FLUENT的气动量头的结构优化设计[J]. 贵州科学, 2015, 33(3): 27-31 https://www.cnki.com.cn/Article/CJFDTOTAL-GZKX201503008.htm

    YUAN M, WU Q, XU W P. Structure optimization design of pneumatic head based on ANSYS FLUENT[J]. Guizhou Science, 2015, 33(3): 27-31 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GZKX201503008.htm
    [20] JERMAK C J, RUCKI M. Static characteristics of air gauges applied in the roundness assessment[J]. Metrology and Measurement Systems, 2016, 23(1): 85-96 doi: 10.1515/mms-2016-0009
  • 加载中
图(11) / 表(2)
计量
  • 文章访问数:  84
  • HTML全文浏览量:  18
  • PDF下载量:  13
  • 被引次数: 0
出版历程
  • 收稿日期:  2019-10-30
  • 刊出日期:  2021-03-01

目录

    /

    返回文章
    返回